Effects of excessive Bi on the structure and the properties of Aurivillius Bi5.25La0.75Fe2Ti3O18 thin films


The effects of excessive Bi on the structural, electrical and multiferroic properties of the La-doped Bi6Fe2Ti3O18 (Bi5.25La0.75Fe2Ti3O18) thin films prepared on Pt(111)/Ti/SiO2/Si(100) substrates by using a chemical solution deposition method are reported. The structures of the thin films were studied by using X-ray diffraction, Raman scattering spectroscopy and scanning electron microscopy. From the experimental comparisons, a low electrical leakage current of 1.84 × 10-5 A/cm2 at 100 kV/cm and enhanced ferroelectric properties, such as a large remnant polarization (2Pr) of 10.5 μC/cm2 and a low coercive field (2Ec) of 400 kV/cm at 485 kV/cm, were observed for the 5% Biexcess La-doped Bi6Fe2Ti3O18 thin film. The formation of a stable bismuth layer-structured phase, a lower c-axis orientation, an optimum crystallinity and a dense microstructure with a smooth surface morphology correlate with the improved electrical and multiferroic properties of the 5% Bi-excessive Bi6Fe2Ti3O18 thin film.

Publication DOI: https://doi.org/10.3938/NPSM.64.696
Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
College of Engineering & Physical Sciences
Funding Information: This research is financially supported by Changwon National University in 2013~2014.
Additional Information: This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Uncontrolled Keywords: Aurivillius La doped BiFeTiO thin film,Chemical solution deposition,Multiferroic properties,Structure,Physics and Astronomy(all)
Publication ISSN: 0374-4914
Last Modified: 08 Jan 2024 09:20
Date Deposited: 14 Oct 2019 08:54
Full Text Link:
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
http://www.npsm ... e=696&year=2014 (Publisher URL)
PURE Output Type: Article
Published Date: 2014-07-01
Accepted Date: 2014-05-15
Authors: Raghavan, Chinnambedu Murugesan (ORCID Profile 0000-0003-3521-4255)
Kim, Jin Won
Choi, Ji Ya
Kim, Sang Su
Kim, Jong Woo


Export / Share Citation


Additional statistics for this record